Any doubt who was calling the shots for the Philadelphia Eagles on personnel matters disappeared in a terse statement issued today that the Eagles have "parted ways" with explosive but high-maintenance wide receiver DeSean Jackson.

Jackson doesn't really fit Kelly's preferred model of wide receiver, it's true, but that's not why the Birds let him go and took a $6.25 million salary cap hit. After all, Jackson posted his best season as a receiver last year under Kelly with 82 catches for 1,332 yards and 9 TDs.

The reason why Jackson went was because he doesn't fit the culture Kelly wants to build in Philadelphia.

Kelly undoubtedly watched from afar Jackson's pouting over his contract in 2011, and when Jackson brought up a raise two days after the Eagles' playoff loss to New Orleans in January, it seems likely Kelly saw a rerun of 2011 coming, and wasn't going to stand for it. The surprise re-signing of Jeremy Maclin, looking backward, was the first domino to fall in a chain that ended with today's announcement.

Kelly's message is clear: be my guy and do it my way or you're done in Philadelphia. By letting a Pro Bowl player such as Jackson go, the Eagles head coach shows no one who gets in the way of what he wants to build in Philadelphia will be here much longer. It's a lesson Kelly wants his team to learn even at the cost of losing a player such as Jackson.